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新正阳隧道斜井平面图
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本隧道位于重庆市黔江区境内，中心里程：ZDK296+，最大埋深约355米。进口ZDK294+～ZDK294+,洞身ZDK295+～ZDK296++～ZDK297+，分别为半径1200米右偏，半径6000米左偏，以及半径1200米右偏的曲线，其余地段为直线，设计纵坡为-‰，-‰，-3‰的单面下坡。
隧道位属中低山剥蚀地貌，地面高程558米～903米，相对高差月345米，地形起伏，可溶岩段多现溶洞，封闭凹地，落水洞、竖井及暗河。植被较差，村舍及民房较多，其他以农田，旱地为主，进口接石灰坝大桥，交通不便，出口接黔江车站，交通便利。
斜井位于DK283+700右侧一破